量子研究，有新进展

Core Viewpoint - A research team from the University of Science and Technology of China successfully realized Einstein's "recoil slit" quantum interference thought experiment, demonstrating the gradual change of interference contrast with tunable atomic momentum, thus proving the complementarity principle at the Heisenberg limit and showcasing the continuous transition from quantum to classical [1][6]. Group 1 - The research achieved a faithful implementation of Einstein's thought experiment nearly a century after the debate with Bohr, utilizing a ground state single atom as a "movable slit" sensitive to single photon momentum [6]. - The experiment not only confirmed the principles of quantum mechanics but also advanced precision quantum technologies such as high-precision single atom manipulation and single atom-single photon entanglement [6]. - The findings lay the groundwork for future explorations into large-scale neutral atom arrays, compressed state error correction coding, and further investigations into decoherence and the quantum-to-classical transition [6]. Group 2 - The original thought experiment proposed by Einstein during the 1927 Solvay Conference aimed to challenge Bohr's complementarity principle by allowing a single photon to pass through a movable slit, suggesting that measuring the recoil could reveal the photon's path while preserving interference patterns [5]. - This thought experiment is considered one of the most profound paradoxes in quantum mechanics, directly addressing the question of whether complete information about both wave and particle properties can be obtained simultaneously [5].